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Physiochemical Properties of Polysaccharides Extracted from Tofu Processing Wastewater
Author(s) -
Sonda T.S.,
Kain R.J.,
Yao H.
Publication year - 2002
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.2002.tb08705.x
Subject(s) - polysaccharide , chemistry , extraction (chemistry) , sugar , yield (engineering) , chromatography , wastewater , intrinsic viscosity , viscosity , food science , polymer , organic chemistry , materials science , environmental engineering , engineering , metallurgy , composite material
Yield, gelation, viscosity, emulsifying properties, and sugar composition of polysaccharides extracted from tofu processing wastewater under acidic conditions at different temperature levels and incubation times were determined. Optimum extraction for water‐soluble polysaccharides was at pH 1.5 and 100 °C over an incubation period of 6 hours. Extraction ratio (%) and yield of high‐molecular‐weight polysaccharides were higher at pH ranges of 1.5 to 3.0 with extraction temperatures of 80 to 100 °C. Most water‐soluble polysaccharides extracted under strong acidic conditions and above 80 °C remained fluid, while most extracted within the range of 45 to 80 °C gelled. Pure polysaccharides exhibited better emulsifying properties than water‐soluble polysaccharides. Apparent viscosities of water‐soluble polysaccharides were dependent on sugar concentration.